Wheel-jack for carriages



U TTE STATES PATENT OFFICE.

HENRY HOOTON AND J OS. G. BICKNELL, OF BOSTON, MASSACHUSETTS.

WHEEL-JACK FOR CARRIAGES, &G.

Specification of Letters Patent No. 24,213, dated May 31, 1859.

To all whom it may concern:

Be it known that we, HENRY HooToN, of Boston, in the county of Suffolkand State of Massachusetts, and JOSEPH G. BICKNELL, of Oambridgeport, inthe county of Middlevsex and State of Massachusetts, have invented a newVheel-Jack for Raising, Lowering, and Moving vWeights or Heavy Bodies;and we do declare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawings and theletters of reference marked thereon.

The nature of our invention consists in so arranging a notched shaftwith ratchets and pawls that heavy bodies may be easily, quickly andsteadily raised and lowered.

To enable others to make and use our invention we will proceed todescribe its construction and operation.

The machine is constructed of cast iron. It consists of a hollow box A,a notched shaft B, a lever D, a front jointed pawl C, a back pawl O, ajointed connecting rod K, a button H, a catch G, a spring F, a button E.

The operation of machine is as follows: The head of the notched shaft Bhaving been placed in contact with the weight to be raised the spring Fis fastened down by the button E, the lever D is elevated, the action ofa spring upon the lower joint of the front pawl C decreases its lengthand the pawl falls into the notch next below where it previously stood.Upon depressing the lever D the length of the pawl C is restored and theshaft B consequently raised. Upon again raising the lever D the sameaction is renewed, the shaft B being retained in its place by the backpawl O. For the purpose of lowering weights the action of the machine isreversed. In order to do this the button E is turned olf of the springF; the button H is 'turned into the catch fitted to receive it. Theaction of the machine is then reversed, the shaft B descending with eachelevation of the lever D.

What we claim as o ur invention is l. The combination of the hollow boxA with the lever Dthe front jointed pawl O the back pawl O and thenotched shaft B, operating substantially as described.

2. The combination of the but-ton E-the spring F-the catch G-the buttonH--and the jointed connecting rod K, operating substantially asdescribed.

HENRY HOOTON. JOSEPH Gr. BICKNELL.

Witnesses:

F. A. SEARLE, HENRY U. YORK.

